2 - 5 June 2025

Lisbon Congress Centre







Hosted by:

Organised by:








The 2023 event was the best SubOptic conference yet



SubOptic is the triennial industry-renowned submarine telecoms conference. It is the longest running and most comprehensive conference series in the world for the submarine cable industry.

The 2023 event was the ”best event yet” with 783 attendees, an incredible technical programme and a packed networking agenda. Watch our highlights video


what's on the horizon

Sponsorship and exhibition packages now available for the 2025 event



A wide variety of sponsorship opportunities are available, ranging from premium packages to affordable exhibition only packages.

Contact Adam Ball at: adam.ball@terrapinn.com


SubOptic 2023
"Unique combination of intensive networking opportunities and up-to-date technical content delivered and shared by the right experts."

Pioneer Consulting
SubOptic 2023
"Excellent organisation, excellent the level of the presentations and of the speakers! An outstanding occasion of networking"

Elettra Tlc Spa
SubOptic 2023
"It’s a like-minded gathering. Content is excellent"

SubOptic 2023
"SubOptic, by far, has the best content of the submarine cable industry events"

DRG Undersea Consulting

Join us in Lisbon


More details on the 2025 Lisbon event will be released shortly.

In the meantime, if you’d like to discuss sponsorship or exhibition opportunities please contact adam.ball@terrapinn.com